Ink cartridge



FIG. 1 is a front, top, and left side perspective view of an ink cartridge;

FIG. 2 is a rear, bottom, and right side perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a front elevation view thereof; and,

FIG. 8 is a rear elevation view thereof.

Those portions of the Figures shown in broken lines are included for environmental purposes only and form no part of the claimed design. 

CLAIM The ornamental design for an ink cartridge, as shown and described herein. 